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As Tuesday dawned citizens of the world's most polluted city found themselves inhaling severely hazardous air that registered in the "critical" range.

Extremely High Air Quality Measurements

Multiple areas of the city showed an AQI above 500, which equals 10x the recommended threshold established by the WHO.

In some locations, levels of dangerous airborne particles hit highs of 1,800, equating to fifteen to twenty times exceeding healthy standards.

Fireworks Prohibition and Recent Developments

For the past four years, authorities had enforced a total prohibition on the purchase and ignition of fireworks during celebrations due to their significant contribution to the hazardous pollution that blankets the city as the cold season begins.

However in recent months, the newly elected regional government petitioned the judicial authority to propose a relaxation of the ban.

Officials advocated for allowing "eco-friendly fireworks" – previously questioned by environmentalists as being only roughly 30 percent reduced emissions – as a compromise between "tradition and ecological concerns".

Legal Verdict and Implementation

Despite concerns of medical and ecological advocates, the court approved the proposal, stipulating that green firecrackers could be used during designated time windows throughout the festival.

During the celebrations, there was extensive disregard of the time restrictions across the city, with insufficient monitoring regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Numerous monitoring devices throughout the capital registered contamination spiking around midnight to extremely hazardous levels observed during the festival in at least the past three years.

International Effects

Extensive ignition of fireworks during the festival also sparked a dispute with bordering Pakistan, with authorities in Pakistan's Punjab province pointing to worsening atmospheric conditions in the city of Lahore on contaminants originating in neighboring India following the celebrations.

Chronic Pollution Crisis

Extremely elevated concentrations of air contamination in the capital have persisted as a significant problem for fifteen-plus years, with the situation continuing to worsen.

During Diwali, the amount of hazardous airborne contaminants in the atmosphere has been documented to shoot up to seventy percent above the most severe records ever documented in Beijing, which was formerly regarded as the planet's dirtiest city.

Multiple Contamination Factors

The situation in Delhi is attributed to a mix of multiple factors including automobile exhaust, airborne particles, development work, waste incineration and haze from farm burning in nearby areas of Punjab and Haryana.

Throughout these areas, agricultural workers regularly set their fields on fire to clear them quickly, creating toxic smog that becomes contained over the city as winter air sets in.

Medical and Economic Impact

Public health and economic impact on the nearly 33 million residents living in the metropolitan zone is enormous, according to numerous research.

The contaminated air causes high levels of neurological, cardiovascular and lung conditions, and can result in oncological diseases.

Air quality crisis is projected to be accounting for ten thousand premature mortalities annually in the city.